i am 75 and i started with heavy feeling to my lower abdomen for about 3 weeks then after eating pastry i had severe pain in my lower abdomen left side vomteing realy bad went to doctors he gave antibiotics . i had fever then chills and my appitite went but after about a week i ate again i had serve pain in my stomach and it bloated up very bad and i vomited.it feels like if i eat it is stuck in my stomach and i keep having heartburn and feel sick, i have lost nearly 2 stones in wieght in two weeks and i feel very tied and week all the time.